Exercise 7: Change into passive or active :
1. Enlish is speaked here.
2. Stamps aren't sold in bookshops.
3. Kieu's story was writen by Nguyen Du.
4. We are going to be told a story by the teacher.
5. The class room was being cleaned when i came.
6. More and more pollution is being produced by that factory.
7. Did Tom send the letters ?
8. The check hasn't been signed.
9. His story isn't believed.
10. Is English teached in your school?
11. Mr.John opened this store in 1990.
12. The students are writing the lessons.
13. The window was broken and some pictures were taken away .
14. He will be sent a gift on his birthday by her.
15. I was given that bicycle last week.
16. English is known to be an international language.
17. It was believed that the earth stood still.
18. He is thought to have died a natural death.
19. 13 is believed to be an unlucky number.
20. They think that the owner of the house has gone abroad.
21. She is said to work 16 hours a day.
22. The prisoner is thought to have escaped by climbing over the wall.
23. He has his arm bandaged by a nurse.